SUJET : joomla and limesurvey participants

I'm trying to create a joomla site where each user has to participate in a survey. What I need to do is the following:
1. Create a unique link (i'm not very into limesurvey, but I think that should somehow automaticcally generate tokens for each user registred in the site)
2. Display the survey in the profile of the user, which should be the easy part if I have token/link
3. Display top 10 results based on a specific question answers (topline report with top 10 on 2 questions)

Do you have any close solutions and do you think it's possible? If you ccan give me some hints that would be great as I have been working in the past with other survey systems, but not with this one.

Many thanks in advance for getting back to me

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